Schneider Electric

140CPS21400

Modicon Quantum – 5.1 VDC Backplane Power Supply

1. General Information

• Manufacturer: Schneider Electric

• Part Number: 140CPS21400

• Series: Modicon Quantum PLC

• Type: Rack‑mount backplane power supply (summable / parallelable)

• Input: 24 VDC nominal (20–30 VDC wide range)

• Output: 5.1 VDC (logic power for Quantum backplane)

• Application: Medium‑power Quantum racks; multiple units can be paralleled (up to 4 units for 32 A total)

• Coating: Non‑coated (standard)

• Key Difference vs 21100: 8A vs 3A, summable, with alarm contact

2. Electrical Specifications

Input (DC)

• Voltage: 20–30 VDC (nominal 24 VDC)

• Input Current: 3.8 A max

• Inrush Current:

  • 14 A @ 20 VDC

  • 25 A @ 24 VDC

• Hold‑up / Interruption Time:

  • 1 ms @ 20 VDC

  • 100 ms max (wide range)

• External Fuse: 5 A slow‑blow

Output

• Voltage: 5.1 VDC ±1% (regulated)

• Current (@60°C): 0.5–8 A continuous, summable

• Total Parallel Current: Up to 32 A (4 × 8 A modules)

• Ripple & Noise: < 50 mVpp typical

• Protection: OVP / OLP / SCP / thermal shutdown (all internal)

• Power Dissipation: 6 + (1.8 × Iout) W (Iout in A)

• Efficiency: ≥ 90% typical

Signaling & Alarm

• Local Indication: Green “PWR OK” LED

• Alarm Contact: 1 × NC (Normally Closed), 6 A / 220 VAC (fault alarm)

3. Environmental & Mechanical

• Operating Temperature: 0 °C to +60 °C

• Storage Temperature: −40 °C to +85 °C

• Relative Humidity: 95% RH max, non‑condensing

• Altitude: Up to 5,000 m

• Protection Class: IP20 (indoor use)

• Mounting: 1 slot in Quantum backplane

• Weight: Approx. 0.65 kg

4. Key Features

1. 24 VDC wide‑range input: 20–30 VDC, works with standard industrial 24 V / UPS systems.

2. 8A high‑current 5.1 VDC output: for medium/large Quantum racks.

3. Summable / parallelable: up to 4 units for 32 A total (high‑power systems).

4. Built‑in alarm contact (NC): remote fault monitoring.

5. Green “PWR OK” LED: local status.

6. Full protection: OVP / OLP / SCP / thermal shutdown.

7. High efficiency: ≥ 90%, low heat.

5. Certifications

• CE

• UL 508

• CUL / CSA C22.2 No 142

• FM Class 1 Div 2

• RoHS compliant

6. Ordering Notes

• 140CPS21400: 24 VDC input, 8 A summable, non‑coated, with NC alarm contact.

• 140CPS21400C: Conformal coated version (harsh environment).

• Compare to 140CPS21100: 8A vs 3A, summable vs standalone, alarm vs no alarm.

• Obsolete: Replaced by BMXCPS3500 (M340 platform).